quite simply one of our nation's finest public servants. >> rose: today the united states face as wave of foreign policy challenges, including the pressing question of how to respond to the potential use of chemical weapons by the assad government in syria, the government warned him of the consequence conditions consequences he could expect. >> i want to make it clear to assad and those under his command the world is watching, the use of chemical weapons is and would be totally unacceptable. and if you make the tragic mistake of using these weapons there will be consequences and you will be held accountable. >> rose: i am pleased to have bob gates back at this table. welcome. >> thank you, charlie. >> rose: so what are you doing since you left government? >> well, i am working on a book, a mental with a of my time under presidents bush and obama as secretary of defense, and doing some speaking but staying as far from washington, d.c. as i can. >> rose: when you look at writing a book, i mean, how hard is that for you to take the time anand think of all of the events and make sure that